EliH

An update: I decided to give this another try. I toggled between the “airplane” and “home” icons in the +/- GMT and “daylight savings” offset, then I stepped through the different month/day/year format settings, and suddenly the “24 hr” versus the “am/pm” time formats became available and I was able to choose. It must be a bug in the firmware. 
Now all is good and I can sleep better. 
 

I believe that the electronic front curtain shutter setting will eliminate shutter shock, as will electronic shutter, but electronic shutter may introduce flicker artifacts if you are under artificial illumination, especially LEDs. Electronic front curtain will not have that consequence. 
Of course, a remote shutter release or using the timer at two seconds will eliminate the physical shock of pushing the shutter release button.